摘要
提出点面接触单元,再通过更新的Lagrange大变形有限元法,对有限尺寸和任意方位的土粒骨架在VanDerWaals分子吸力、Coulomb电荷斥力和外荷载作用下的变形问题进行了跟踪分析,定量探索和分析了土体的变形、破坏、结构性和蠕变的内在机理,为建立结构性土的本构模型提供了微观基础.
On the basis of the pointsurface contact element and the updated Lagrange large strain FEM, a tracing analysis was made of the deformation of soil particle skeletons under the Van Der Waals attraction, the doublelayer repulsion and external loads, and the micromechanism of skeleton deformation, failure, structure, and creep was also discussed, providing a basis for development of constitutive models of structural soil.
出处
《河海大学学报(自然科学版)》
CAS
CSCD
北大核心
2003年第2期161-165,共5页
Journal of Hohai University(Natural Sciences)
基金
国家自然科学基金资助项目(19772019)
关键词
结构性土
土骨架
接触面
变形
微观机理
structural soil
soil skeleton
contact surface
deformation
micro-mechanism